CATALYTIC CONVERSION OF LACTIC ACID TO ACRYLIC ACID

摘要

DISCLOSED HEREIN IS THE CATALYTIC DEHYDRATION OF LACTIC ACID TO ACRYLIC ACID, WHICH IS CHARACTERIZED BY A HIGH CONVERSION OF LACTIC ACID, A HIGH SELECTIVITY FOR ACRYLIC ACID, A HIGH YIELD OF ACRYLIC ACID, AND CORRESPONDINGLY LOW SELECTIVITY AND MOLAR YIELDS FOR UNDESIRED BY-PRODUCTS. THIS IS ACHIEVED WITH A PARTICULAR CLASS OF CATALYSTS DEFINED BY A MIXTURE OF METAL-CONTAINING PHOSPHATE SALTS THAT TOGETHER PROVIDE THE CATALYST WITH A VERY HIGH BASICITY DENSITY AND LOW ACIDITY DENSITY. FURTHER, THE CATALYST IS BELIEVED TO BE STABLE AND ACTIVE FOR LENGTHY PERIODS HERETOFORE UNSEEN IN THE ART FOR SUCH DEHYDRATION PROCESSES. THE MOST SUITABLE DRAWING: FIG. 1